Utility of orcein stain and comparison with Masson trichrome stain in chronic intestinal pseudo-obstruction. 2023

Pavithra Ayyanar, and Suvradeep Mitra
Department of Pathology and Lab Medicine, AIIMS, Bhubaneswar, Odisha, India.

Chronic intestinal pseudo-obstruction (CIPO) is caused by a plethora of primary and secondary causes, dominantly involving the neuromuscular tissue, interstitial cells of Cajal, or the connective tissue framework. The lack of the connective tissue framework, known as desmosis, is evaluated by Masson's trichrome (MT) or picrosirius red stains, both of which are recommended in the London classification. We evaluated the orcein stain in detecting desmosis in comparison to the MT stain. We performed both orcein and MT stains in six previously published cases of complete or partial desmosis along with six age-matched controls. Our results showed comparable results of the orcein stain as compared to the MT stain. Additional advantages of lower cost and a clearer background in orcein stain were noteworthy, whereas MT stain can be used for the detection of additional pathology. We believe that orcein stain can be used as a cheap alternative in resource-limited settings.

UI MeSH Term Description Entries
D007418 Intestinal Pseudo-Obstruction A type of ILEUS, a functional not mechanical obstruction of the INTESTINES. This syndrome is caused by a large number of disorders involving the smooth muscles (MUSCLE, SMOOTH) or the NERVOUS SYSTEM. CIPO,Chronic Idiopathic Intestinal Pseudo-Obstruction,Paralytic Ileus,Pseudo-Obstruction, Intestinal,Visceral Myopathy,Congenital Short Bowel Syndrome,Enteric Neuropathy,Intestinal Pseudo-Obstruction, Idiopathic,Intestinal Pseudoobstruction,Pseudointestinal Obstruction Syndrome,Pseudoobstructive Syndrome,Chronic Idiopathic Intestinal Pseudo Obstruction,Enteric Neuropathies,Idiopathic Intestinal Pseudo-Obstruction,Idiopathic Intestinal Pseudo-Obstructions,Intestinal Pseudo Obstruction,Intestinal Pseudo Obstruction, Idiopathic,Intestinal Pseudo-Obstructions,Intestinal Pseudo-Obstructions, Idiopathic,Intestinal Pseudoobstructions,Myopathy, Visceral,Neuropathy, Enteric,Obstruction Syndrome, Pseudointestinal,Pseudo Obstruction, Intestinal,Pseudointestinal Obstruction Syndromes,Pseudoobstruction, Intestinal,Pseudoobstructive Syndromes,Syndrome, Pseudointestinal Obstruction,Syndrome, Pseudoobstructive,Visceral Myopathies
D008739 Methyl Green A tri-benzene-ammonium usually compounded with zinc chloride. It is used as a biological stain and for the dyeing and printing of textiles. Light Green,Green, Light,Green, Methyl
D002908 Chronic Disease Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care (Dictionary of Health Services Management, 2d ed). For epidemiological studies chronic disease often includes HEART DISEASES; STROKE; CANCER; and diabetes (DIABETES MELLITUS, TYPE 2). Chronic Condition,Chronic Illness,Chronically Ill,Chronic Conditions,Chronic Diseases,Chronic Illnesses,Condition, Chronic,Disease, Chronic,Illness, Chronic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013194 Staining and Labeling The marking of biological material with a dye or other reagent for the purpose of identifying and quantitating components of tissues, cells or their extracts. Histological Labeling,Staining,Histological Labelings,Labeling and Staining,Labeling, Histological,Labelings, Histological,Stainings

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